It________me half an hour to reach the top of the mountain．
A．spent
B．cost
C．took
D．paid
Fifteen-year-olds________to have jobs in China．
A．is not allowed
B．are allowed
C．is allowed
D．are not allowed
A knife can be used for________(cut)bread．
—Why not go to Lao She Teahouse tonight?
—________．
A．It doesn’t matter
B．Thank you
C．Sorry to hear that
D．Sounds great
The window is broken．Try to________who broke it．
A．find out
B．find
C．look
D．look for
好像谁也不了解这件事。
________ ________ ________nobody knew anything about the matter．
